| Regimental number | 11371 |
| Religion | Roman Catholic |
| Occupation | Draper |
| Address | Victoria Street, West End, South Brisbane, Queensland |
| Marital status | Single |
| Age at embarkation | 18 |
| Next of kin | Mother, Mrs M O'Mara, Victoria Street, West End, South Brisbane, Queensland |
| Enlistment date | 7 September 1915 |
| Rank on enlistment | Private |
| Unit name | Depot Unit Of Supply 14 |
| AWM Embarkation Roll number | 25/109/1 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A64 Demosthenes on 18 May 1916 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 14th Depot Unit of Supply |
| Fate | Returned to Australia 9 August 1919 |
| Family/military connections | Brother: 11372 Corporal William Denis O'MARA, 10th Depot Unit of Supply, returned to Australia, 1 July 1919. |